twigphp Twig up to 3.25.x Twig Sandbox resource consumption

Summaryinfo

A vulnerability has been found in twigphp Twig up to 3.25.x and classified as problematic. The impacted element is an unknown function of the component Twig Sandbox. The manipulation leads to resource consumption. This vulnerability is uniquely identified as CVE-2026-46627. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in twigphp Twig up to 3.25.x and classified as problematic. This issue affects an unknown part of the component Twig Sandbox. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-46627 since 05/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 3.26.0 eliminates this vulnerability.

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Productinfo

Vendor

• twigphp

Name

• Twig

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25

Website

• Product: https://github.com/twigphp/Twig/

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